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4,559 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 93% depart on time. After 4 pm it’s 4 in 5.

Best time to leave 5–6 am 97% arrive on time from SMF
Best single flight DL 4125 SMF 13:00 → SEA 15:16 · 93% on time Avoid AS 1365 SMF 12:44 → SEA 14:48 · 86% on time

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
SMF
95
95
95
87
84
93
87
83
84
74
51
85
78
87
79
75
73
% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55

Pick an hour to see this route’s flights leaving then.

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
Delta (incl. SkyWest) 1,634 89% 0.2% 61 min
Alaska (incl. SkyWest, Horizon) 1,786 81% 0.7% 48 min
Southwest 1,139 79% 0.2% 43 min

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
DL 4125flown by SkyWest SMF 13:00 SEA 15:16 93%
DL 3881flown by SkyWest SMF 11:34 SEA 13:45 90%
DL 4075flown by SkyWest SMF 07:52 SEA 10:05 89%
AS 1365 SMF 12:44 SEA 14:48 86%
All 23 flights on this route →

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
Delta SMF SEA 2h 14m 89% 0.2% 1,634 Flying now
Alaska SMF SEA 2h 05m 81% 0.7% 1,786 Flying now
Southwest SMF SEA 2h 00m 79% 0.2% 1,139 Flying now
Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON